Home / 13,302.76-18,359.10-9,939.74

Finding the Fourth Proportional to 13,302.76, 18,359.10 and 9,939.74

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Solution

The fourth proportional to 13,302.76, 18,359.10 and 9,939.74 is: 13,717.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,302.76 : 18,359.10 = 9,939.74 : x
  2. Step 2: Convert to fraction form
    13,302.76/18,359.10 = 9,939.74/x
  3. Step 3: Cross multiply
    13,302.76x = 18,359.10 × 9,939.74
  4. Step 4: Simplify right side
    13,302.76x = 182,484,680.63
  5. Step 5: Solve for x
    x = 182,484,680.63/13,302.76
  6. Step 6: Final answer
    x = 13,717.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.